HELP for Car ECU Reading Project with NodeMCU ESP8266 and MCP2515

[brunopbaffonso]

Hello!

I'm having difficulties with a personal project and any help you can offer would be extremely valuable!

The idea of ​​the project is to read my car's ECU, process the signal, and make the data available in Serial format.

I'm using my own car to create this PoC, a VOLKSWAGEN VOYAGE 1.6L AF5 2020 (2021 model).

I connected pins 6 and 14 of the car's OBD2 port to the HIGH and LOW connectors of the MCP2515 module, respectively, to read the CAN signal.

For the master board of this circuit, I used the NodeMCU ESP8266.

The connections between the MCP2515 module and the NodeMCU were made through several trials and errors. Additionally, I tested several online code examples, but unfortunately I was unsuccessful with any of them.

I can't believe all the tutorials I found and tried didn't work. I know I'm probably making a mistake, but I would like some direction or guidance to move forward.

Thank you in advance for your attention and help.

Below are some links used as references for Documentation/Concepts, Codes and Electronic Connections...

https://notepad.pw/share/R7ARgCM00ERsru1vrlxf

Thanks for the attention!

Regards;
Bruno Affonso.

[AgentSmithers]

Are you using RTOS or NONOS SDK?